Barrel.



E. W. ROBINSON. BARREL, APPLICATION FILED MAY 1, 1912 1,052, 1 78.Patented Feb. 4, 1913.

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WITNESSES? INVENTOR RD w. ROBINSON HIS ATTORNEY JAM, 4.41%

UNITED STATES PATENT OFFICE.

EDWARD W. ROBINSON, OF SAVANNAH, GEORGIA, ASSIGNOR, BY MESNE ASSIGN-MENTS, TO INTERNATIONAL BARREL COMPANY, OF SAVANNAH, GEORGIA, A

CORPORATION OF GEORGIA.

BARREL.

To all whom it may concern Be it known that I, EDWARD W. ROBIN- SON, acitizen of the United States, residing in Savannah, Georgia, haveinvented certain Improvements in Barrels, of which the following -is aspecification.

My invention relates to barrels composed of staves interwoven withproperly spaced pairs of wires which take the place of the usual hoopsfor retaining the staves 1n proper relation to one another, and mynvention relates particularly to a barrel of this type intended mainlyfor the storage and transportation of powdered and granular material andtechnically known as a slack barrel in contradistinction to one which istechnically known as a tight barrel and which is intended for thestorage and transportation of liquids.

One object of my present invention is to so construct the barrel as toprevent leakage of the powdered or granular material therefrom, andanother object is to provide for the firm and rigid support of expansionheads in the opposite ends of the barrel. These objects I attain in themanner herelnafter set forth, reference being had to the accompanyingdrawings, in which- Figure 1 is a side elevation of a barrel constructedin accordance with my present invention; Fig. 2 is an edge view of partof one of the staves to be used in the manufacture of the barrel; Fig. 3is a sectional view showing said stave after it has been interwoven witha pair of wires and the latter have been twisted between adjoiningstaves; Fig. 4 is a horizontal sectional view of the edge portion of thestave; Fig. 5 is a horizontal section showing two adjoining stavesinterwoven with a pair of wires which have been twisted together betweenthe staves; Fig. 6 is a similar view illustrating another embodiment ofmy invention, and Fig. 7 is a vertical sectional view of part of one endof the barrel, and part of the expansion head employed in connectiontherewith.

The barrel is composed of staves 1 which are preferably narrower at theends than at the center so that when the staves are drawn together untiltheir edges meet, the barrel will present the desired bulged form, theedges of the staves being preferably beveled slightly in order to insuretheir close fitting to one another. The staves are confined in positionby as many pairs of wires 2, 2 as Specification of Letters Patent.

Patented Feb. 4,1913.

Application filed May 1, 1912. Serial No. 694,510.

it may be desired to employ, the stave being inserted between the wiresof each pair and the latter being twisted together, as at 3, between thestaves, which are thus firmly held in the desired relation to oneanother.

In order that the staves may fit closely one to another provision mustbe made in the staves for the reception of the twisted portions of thewires and such provision constitutes one of the features of myinvention. In one edge of each stave I form a closed mortise 4:, closedin this connection meaning that the mortise does not extend completelythrough the stave from the inside to the outside of the same but haswalls 5 on each side of the mortise, or, at least, a wall 5 on the innerside of the same. When, therefore, a stave is inserted in the 'open shedof wires and said shed is closed and the wires twisted together, thewires will bear firmly on the inner andouter sides of the stave and,owing to the tension upon them, will cut through the center portions 'ofthe walls 5' so that the twisted portions 3 of the wires will occupy themortise 4, the size of the mortise being so proportioned in respect tothe size of the twisted wires that thelatter will practically fill themortise, the walls of the latter partially inclosing the twisted wires,so that the only channel of communication between the inside of thebarrel and the mortise in that provided by the displacement of thecenter portion of the inner wall by the inner wire 2*, and the onlychannel of communication between the mortise and the outside of thebarrel is that caused by thedisplaoement of the center portion of theouter wall by the outer wire 2 and these displaced portions of the woodbeing jammed between the twisted portions of the wires so as to closeany channel of leakage through the latter which might otherwise exist.When the mortise l is formed entirely in one edge of the stave the wires2, 2 engage the unmortised edge of the adjoining stave as shown in Fig.5, the body of the stave at the base of the mortise and at the cornersof the unmortised edge of the stave being indented by the wires,

owing to the tension under which said wires are twisted.

Instead of providing at one edge of each stave a mortise deep enough toreceive the entire extent of the twisted wires, I may provide ashallower mortise in each edge of the stave, as shown for instance inFig. 6,

the mortises of adjoining staves in that case serving to contain thetwisted portions of the wires.

In connection with my improved barrel I employ an expansion head of anysuitable type, the outer members of this expansion head havingperipheral grooves for engaging the inner wire 2 of the pair at the endof the barrel, and in order that this wire may provide a firm and rigidsupport for the head of the barrel I differentiate the wires of each endpair, the inner wire be ing considerably heavier than the outer one, asshown in Fig. 7, and I, preferably, so twist the wires between theadjoining staves that the heavy wire 2 will always lie 011 the inside ofthe staves.

I claim:

1. A barrel consisting of closely fitting staves having edges withclosed mortises,

said staves being interwoven with pairs of wires which are twistedbetween the staves, the twisted portions of the wires being located insaid mortises, and the wires passing through the side walls of thelatter.

2. A barrel consisting of closely fitting staves each having one edgeplain and the opposite edge provided with closed mortises, said stavesbeing interwoven with pairs of wires which are twisted between thestaves, the twisted portions of the wires being located in the niortisesand the wires passing through the side walls of the latter.

In testimony whereof, I have signed my name to this specification, inthe presence of two subscribing witnesses.

EDIVARD W. ROBINSON.

Witnesses:

KATE A. BEADLE, HAMILTON D. TURNER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

